Stove-back



UNITED STATES i PATENT OFFICE.

`VVILKEN S SGHENCK, OF ST. PAUL, MINNESOTA.

STOVE-BAC K.

SPECIFICATION forming part of Letters Patent No. 237,450, dated February 8, 1881.

Aipncanonnieairay15,1880. (No model.)

To all whom it may concern Be it known that I, WILKENs ScHENcK, of St. Paul, in the county of Ramsey and State of Minnesota, have made certain Improvements in Stove Fire-Backs, of whichf the following is a specification.

This invention relates to auxiliary or reenforcing backs to the lire-pots of cook-stoves, &c. 5 and it consists in a corrugated or ribbed plate provided with sliding top and end extension-pieces, whereby the size of the back may be adjusted to t different sizes of stoves, and in the manner of forming and securing such extension-pieces,as hereinafter set forth.

I attain these objects by the mechanism set forth in the annexed drawings, in which Figure I is a perspective front view of the back contracted, and Fig. II is a perspective front view of the back extended. Fig. III is a perspective rear view of the different parts dis-l connected.

A is a metal platc,with ribs or corrugations a, to add to its strength and prevent warping by the heat, running either horizontally or transversely, and with slots b b through theV plate near either end, as shown.

Near the upper edge of the plate A an oliset, c, is formed, adapted to receive the lower edge of a second plate, B, and extending up in front of it a short distance, said second plate having a backwardly-curved upper edge, d, adapted to tit over the rounded upper edge of the tireback.77

C C are two short plates of the same width as the plate B,and made to conform to and slide in and out behind it, as shown.

The lower edge of the plate B, near either end, is provided with longitudinal slots e e', (see Fig. II[,) in which small spurs g on the lower inner corners of the plates G C' run, to cause them to retain their positions parallel with the plates Aand B.

D Dl are two short fiat pla-tes of the same width as the plate A, and provided with slots b2 b3, corresponding with slots b b in the plate A, so that when bolts t o" are passed through.

the slots the six pieces A B C C D D may be firmly clamped and held together, or -adjnsted in any desired manner.

7c 7c are notches cut in the edge of each of the plates D D', to enable them to be set over the usual lugs in the corners of the hre-pot, used for securing the different parts of the stove together.

. The device will be made of such a size that when contracted, as shown in Fig. I, it will lit the smallest-sized stove, and when extended, as shown in Fig. II, it Will fit the largest sizes; hence the back may be adapted to any-sized stove.

The extension of the back horizontally as well as laterally by means of the wings or plates B G C is a very important and novel feature of my invention, as, so far as I am aware, no back has ever before been constructed with both a horizontal and lateral adjustment wit-hout breaking or cutting oft a portion of the plates.

Anotherirnportant advantage of my arrangementis, that the horizontal extension is at the top instead of the bottom, thus enabling me to place more metal in the lower part ot' the plate A, where the greatest degree ot' heat exists, without adding to the inconvenience ot' handling, as the plate A always remains in one position. By this arrangement a back is constructed that may be extended in every direction to completely cover and protect the lireback of the stove, no matter what its dimensions.

The double system of slots b b b2 b3 enables me to extend the end plates, D D', much farther than it' only one set of slots were used.

The slots and other crevices may be illed with fire-clay after the back is lit-ted into the stove, if desired.

What I claim as new is- 'Ihe combination of the plate A, having the slots b b', end plates,D D,having the slots b2 b3, horizontal extension-plate B, having the slots e e', corner extension-plates, C IO', having the spurs g, and the bolts it', arranged and operating in the manner and for the purpose substantially as set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing Witnesses.

WILKENS SGHENCK.

Witnesses:

C. N. WooDwAnD, LOUIS FEESER. 

